CN102130320B - Electrode assembly and secondary battery including the same - Google Patents
Electrode assembly and secondary battery including the same Download PDFInfo
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- CN102130320B CN102130320B CN201110025053.5A CN201110025053A CN102130320B CN 102130320 B CN102130320 B CN 102130320B CN 201110025053 A CN201110025053 A CN 201110025053A CN 102130320 B CN102130320 B CN 102130320B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
An electrode assembly and a secondary battery including the electrode assembly are disclosed. The electrode assembly includes a first electrode, a second electrode, and a separator disposed between the first and second electrodes. A film is disposed on at least one edge of at least one of the first and second electrodes.
Description
This application claims the 61/295th in submission on January 15th, 2010, the submit in No. 543 U.S. Provisional Applications and on November 22nd, 2010 the 12/952nd, the priority of No. 086 U. S. application and rights and interests, full contents of these applications are contained in this by reference.
Technical field
This technology relates to a kind of electrode assemblie and comprises the secondary cell of this electrode assemblie.
Background technology
Along with the fast development of electronics, communication and computer industry, increase the use of portable electron device.Rechargeable secondary cell is widely used as the power supply of portable electron device.
Secondary cell generally includes positive pole, negative pole and arranges between a positive electrode and a negative electrode as the separator of insulator.
Positive pole and negative pole are usually insulated from each other.In addition, positive pole and negative pole usually and other part insulates of secondary cell, to prevent unnecessary electrical contact.
But, expand when secondary cell is charged or discharged due to negative or positive electrode and shrink, so negative or positive electrode may cause short circuit.
Summary of the invention
Embodiment relates to a kind of electrode assemblie and comprises the secondary cell of this electrode assemblie, wherein, avoids the short circuit because negative or positive electrode expands and shrinks and cause in charge and discharge process in electrode assemblie.
Embodiments of the invention comprise electrode assemblie and comprise the secondary cell of this electrode assemblie.The separator that described electrode assemblie comprises the first electrode, the second electrode and is arranged between the first electrode and the second electrode, wherein, at least one edge of at least one electrode in the first electrode and the second electrode arranges film.
At least one electrode in described first electrode and the second electrode can be negative pole.
At least one electrode in described first electrode and the second electrode can comprise coated portion at least one side, and coated portion can comprise silicon or silicon-containing compound.
Film can comprise insulating material.
Film can comprise basic unit and adhesive layer, and wherein, basic unit is adhered at least one electrode by adhesive layer.
Film can be arranged on an edge of at least one electrode in the first electrode and the second electrode, and electrode tabs can extend from the parallel edge of another electrode the first electrode and the second electrode.
According to embodiments of the invention, various effect can be realized.Such as, according to the electrode assemblie of the embodiment of the present invention and the secondary cell comprising this electrode assemblie, although electrode assemblie expands and shrinks in charge and discharge process, the short circuit between other parts that can prevent negative or positive electrode and electrode assemblie.
Embodiment
More fully example embodiment is described hereinafter with reference to accompanying drawing now.
Fig. 1 is the perspective view of the secondary cell illustrated according to embodiment; Fig. 2 is the decomposition diagram of the secondary cell illustrated according to embodiment; Fig. 3 is the decomposition view of the electrode assemblie of the secondary cell illustrated according to embodiment; Fig. 4 is the diagram of the state of electrode assemblie before electrode assemblie is wound illustrated according to the secondary cell of embodiment; Fig. 5 is the zoomed-in view of the part A in Fig. 3; Fig. 6 A and Fig. 6 B is the cutaway view intercepted along the line B-B ' in Fig. 3; Fig. 7 A and Fig. 7 B is the diagram of the second electrode of the electrode assemblie of the secondary cell illustrated according to embodiment.
Referring to figs. 1 through Fig. 7 B, the secondary cell 1000 of the embodiment illustrated comprises electrode assemblie 100, housing 200 and cap assemblies 300.
Electrode assemblie 100 can comprise the first electrode 110, second electrode 120, separator 130, first electrode tabs 140, second electrode tabs 150 and short circuit and prevent film 160.
Electrode assemblie 100 can be by reeling the first electrode 110, second electrode 120 and be arranged on the coiled electrode assemblies formed as the separator 130 of insulator between the first electrode 110 and the second electrode 120.
In electrode assemblie 100, first electrode tabs 140 can be electrically connected to the first electrode 110 and be stretched out by the top side of electrode assemblie 100, and the second electrode tabs 150 can be electrically connected to the second electrode 120 and be stretched out by the bottom side of electrode assemblie 100.Here, in order to the object illustrated, the side towards cap assemblies 300 of electrode assemblie 100 is defined as the top side of electrode assemblie 100, and the side relative with top side of electrode assemblie 100 is defined as the bottom side of electrode assemblie 100.
First electrode 110 can be positive pole, and the second electrode 120 can be negative pole.On the other hand, the first electrode 110 can be negative pole, and the second electrode 120 can be positive pole.In the secondary cell 1000 of the embodiment illustrated, the first electrode 110 is positive poles, and the second electrode 120 is negative poles.
First electrode 110 can comprise: the first collector 112; First coated portion 114, is formed on the predetermined portions of the one or both sides of the first collector 112; First non-coated part 116, does not form the first coated portion 114 to expose the first collector 112 in the first non-coated part 116.
First electrode tabs 140 can be attached to the first non-coated part 116 of the first electrode 110 and upwards extend.In the illustrated embodiment, the first electrode tabs 140 is attached to the first non-coated part 116; But in other embodiments, the first electrode tabs 140 can be formed as a slice (in one piece) with the first collector 112 of the first electrode 110 and extend from the marginal portion of the first collector 112.In the case of the latter, the first non-coated part 116 can not be formed, and the first coated portion 114 can be formed on the whole region of the one or both sides of the first collector 112.
Second electrode 120 can comprise: the second collector 122; Second coated portion 124, is formed in the presumptive area of the one or both sides of the second collector 122; Second non-coated part 126, does not form the second coated portion 124 to expose the second collector 122 in the second non-coated part 126.
Second electrode tabs 150 can be attached to the second electrode 120 the second non-coated part 126 and to downward-extension.In the illustrated embodiment, the second electrode tabs 150 can be attached to the second non-coated part 126; But in other embodiments, the second electrode tabs 150 can be formed as a slice with the second collector 122 of the second electrode 120 and extend from the marginal portion of the second collector 122.In the case of the latter, the second non-coated part 126 can not be formed, and the second coated portion 124 can be formed on the whole region of the one or both sides of the second collector 122.
Second coated portion 124 can comprise negative active core-shell material, such as silicon (Si) or silicon-containing compound.Such as, the second coated portion 124 can comprise at least one selected the group formed from oxide and the silicon-carbon compound (silicon-carbon complex) by silicon, silicon.
When the first electrode 110 is positive pole and the second electrode 120 is negative poles, as shown in Figure 4, comparable second electrode 120 of the first electrode 110 is little.Specifically, the area of the first coated portion 114 of the first electrode 110 can be less than the area of the second coated portion 124 of the second electrode 120, and the first coated portion 114 of the first electrode 110 is towards the second coated portion 124.Such as, the whole area of the first coated portion 114 can be stacked with the second coated portion 124.
When charging to electrode assemblie 100, the first electrode 110 or the second electrode 120 expand.Specifically, if the second coated portion 124 of the second electrode 120 comprises silicon or silicon-containing compound, then the second electrode 120 (that is, the second coated portion 124) can be expanded to original 1.5 times after electrode assemblie 100 is by charging.Therefore, the second electrode 120 may contact with other parts (such as, the first electrode tabs 140 or the first electrode 110) and cause short circuit.
In order to prevent this situation, in the illustrated embodiment, short circuit can be set in the pre-position of the second electrode 120 and prevent film 160.
Short circuit prevents film 160 can be arranged on an edge in the first edge 122a, the second edge 122b of the second electrode 120, the 3rd edge 122c and the 4th edge 122d.Such as, short circuit prevents film 160 can be arranged on being exposed on the first edge 122a of the top side of electrode assemblie of the second electrode 120.When the second electrode 120 expands, the first limit 122a of the second electrode 120 can be exposed, and therefore the first edge 122a can contact to cause short circuit with the other parts of electrode assemblie.Specifically, because the first electrode tabs 140 of the first electrode 110 upwards extends, that is, first electrode tabs 140 is positioned at the expansion direction of the first edge 122a of the second electrode 120, so the most easily there is short circuit when the first edge 122a of the second electrode 120 expands along with the second electrode 120 and contacts with the first electrode tabs 140.
Short circuit prevents film 160 can be arranged in a part for the second electrode 120.Such as, short circuit can be set in the mode making short circuit prevent film 160 from covering the edge of the second coated portion 124 be formed on the surface of the second electrode 120 and prevent film 160.When description second electrode 120 expands, it should be understood that the second coated portion 124 expands instead of the second collector 122 expands.
Therefore, although the second coated portion 124 expands a little a little, short circuit prevents film 160 from can cover the edge of the second coated portion 124 to suppress the expansion of the second coated portion 124 and to prevent the second coated portion 124 from contacting with the other parts of electrode assemblie.Short circuit prevents film 160 from can expand together with the second coated portion 124 to a certain extent.
For this reason, short circuit prevents film 160 from can be formed by flexible insulating material.In addition, short circuit prevents film 160 to be not limited to film shape, and short circuit prevents film 160 from can be formed by the insulator of other form.
Short circuit prevents film 160 from can comprise basic unit and is formed in the adhesive layer on the side of basic unit.Short circuit prevent film 160 by adhesive layer is attached to the second electrode 120 surface on be attached to the second electrode 120.Basic unit can be formed by the artificial resin of the such as flexible insulation of polypropylene (PP) or natural resin.
Method for solution coating by such as infusion process forms short circuit and prevents film 160.
Because short circuit prevents film 160 from can cover the second coated portion 124, if so short circuit prevents film 160 from comprising multiple holes 162 as shown in Figure 5, the more multiaspect that then can expose the second coated portion 124 is amassed, therefore, it is possible to improve the charge/discharge characteristics of secondary cell 1000.
Short circuit prevents film 160 can have the width being suitable for covering first edge 122a.Such as, short circuit prevents from film 160 to have being less than the width W 1 of the difference between the width W 2 of the second electrode 120 and the width W 3 of the first electrode 110.Such as, short circuit prevents from film 160 to have being less than or equal to the width W 1 of 1/2 of difference between the width W 2 of the second electrode 120 and the width W 3 of the first electrode 110.Such as, if the width W 3 of the first electrode 110 is 50mm and the width W 2 of the second electrode 120 is 51mm, then short circuit prevents the width W 1 of film 160 from can be 0.5mm or less.In this case, as shown in Figure 4, by the first electrode 110 and the second electrode 120 being set to after facing with each other and reel opposed facing first electrode 110 and the second electrode 120 form electrode assemblie 100, the area of the second coated portion 124 of the second electrode 120 can be greater than the area of the first coated portion 114 of the first electrode 110.Do not need to set the lower limit (minimum value) that short circuit prevents the width W 1 of film 160.But, can determine that short circuit prevents the minimum value of the width W 1 of film 160 according to manufacturing condition.According to capacity and the size of secondary cell 1000, short circuit can be selected to prevent the thickness of film 160 from several microns (μm) to the scope of hundreds of micron (μm).
As shown in Figure 6A, short circuit prevents film 160 from can cover the both sides of the first edge 122a of the second electrode 120, or as shown in Figure 6B, short circuit prevents film 160 from can cover both sides and the top of the first edge 122a of the second electrode 120.In one embodiment, short circuit prevents film 160 can be arranged on an edge of an electrode in the first electrode 110 and the second electrode 120, and electrode tabs extending with the edge of a described sides aligned parallel from another electrode the first electrode 110 and the second electrode 120.
As shown in Figure 7 A, short circuit prevents film 160 can be arranged on the first edge 122a and be positioned on the second edge 122b of bottom side of electrode assemblie 100.When electrode assemblie 100 expands, short circuit between the parts that the short circuit be arranged on the second edge 122b prevents film 160 from can prevent electrode assemblie, specifically, prevents short circuit between the first electrode 110 and the second electrode 120.
As shown in Figure 7 B, on the leading edge that short circuit prevents film 160 also can be arranged on the second electrode 120 and trailing edge, that is, on the 3rd edge 122c and the 4th edge 122d of the second electrode 120.By the leading edge that first reels, the trailing edge that then reels reels the second electrode 120.
As shown in Figure 3 and Figure 4, by according to sequence stack two separators 130, first electrode 110 of separator 130, first electrode 110, separator 130 and the second electrode 120 and the second electrode 120, and reel two separators 130, first electrode 110 and the second electrode 120 to assemble electrode assemblie 100 relative to winding center axle SL.
Centrepin 170 can be inserted in electrode assemblie 100 along the center line of electrode assemblie 100.Such as, by using centrepin 170 to reel two separators 130, first electrode 110 and the second electrode 120 as winding center axle SL.
It is inner that electrode assemblie 100 can be arranged on housing 200.
Housing 200 can have the shape of the cylindrical tank comprising open side.Housing 200 can comprise the holding portion for hold electrodes assembly 100.Housing 200 can be formed by the electric conducting material of such as aluminium (Al), iron (Fe) or their alloy.
When electrode assemblie 100 is inserted in housing 200, top insulation board 180 and bottom insulation plate 190 can be placed in the top side of electrode assemblie 100 and bottom side.Can to prevent between electrode assemblie 100 and other parts of secondary cell 1000 less desirable contacts for top insulation board 180 and bottom insulation plate 190, that is, top insulation board 180 and bottom insulation plate 190 can prevent short circuit.Top insulation board 180 can comprise through hole 182, and to allow the first electrode tabs 140 to pass, bottom insulation plate 190 can comprise through hole 192, passes to allow the second electrode tabs 150.
Electrode assemblie 100 can be inserted into the open side of covering shell 200 afterwards in housing 200 by cap assemblies 300.
Cap assemblies 300 can comprise insulating washer 310, safety valve 320, circuit substrate 330, positive temperature coefficient (PTC) thermistor 340 and upper cover 350.
Insulating washer 310 can be used as the containment member between other parts (such as, safety valve 320, circuit substrate 330, PTC thermistor 340 and upper cover 350) of housing 200 and cap assemblies 300.
That is, insulating washer 310 also can be attached to housing 200, with the inside of seal casinghousing 200 with the contacts side surfaces of safety valve 320, circuit substrate 330, PTC thermistor 340 and upper cover 350.
Safety valve 320 can be arranged on the lower edge portion office of cap assemblies 300, that is, towards the position of insulation board 180.If the internal pressure of secondary cell 1000 increases to predetermined value, then safety valve 320 can expand.For this reason, originally a part for safety valve 320 can be bent downwardly.
Circuit substrate 330 can be arranged on the top side of safety valve 320 and can be electrically connected with safety valve 320 and be mechanically connected.If safety valve 320 expands, then circuit substrate 330 can make circuit breaker.
PTC thermistor 340 can be arranged on the top side of circuit substrate 330, and can be electrically connected with circuit substrate 330 and be mechanically connected.If the temperature of PTC thermistor 340 increases to exceed predetermined value, then the resistance of PTC thermistor 340 can sharply increase.
Upper cover 350 can be arranged on the top side of PTC thermistor 340, and upper cover 350 can be electrically connected with PTC thermistor 340 and be mechanically connected.
The first electrode tabs 140 extended from the first electrode 110 of electrode assemblie 100 can be electrically connected to safety valve 320, and the second electrode tabs 150 extended from the second electrode 120 can be electrically connected to housing 200.Therefore, the upper cover 350 of cap assemblies 300 can be used as the first terminal with the polarity identical with the polarity of the first electrode 110 of secondary cell 1000, and housing 200 can be used as second terminal with the polarity identical with the polarity of the second electrode 120 of secondary cell 1000.
Fig. 8 is the perspective view of the secondary cell illustrated according to another embodiment; Fig. 9 is the decomposition diagram of the secondary cell illustrated according to embodiment; Figure 10 is the decomposition view of the electrode assemblie of the secondary cell illustrated according to embodiment; Figure 11 is the diagram of the state of electrode assemblie before electrode assemblie is wound illustrated according to the secondary cell of embodiment.
With reference to Fig. 8 to Figure 11, the secondary cell 2000 of present example comprises electrode assemblie 500, housing 600 and cap assemblies 700.
Electrode assemblie 500 comprises the first electrode 510, second electrode 520, separator 530, first electrode tabs 540, second electrode tabs 550 and short circuit and prevents film 560.
First electrode 510 can comprise the first collector 512, first coated portion 514 and the first non-coated part 516, second electrode 520 can comprise the second collector 522, second coated portion 524 and the second non-coated part 526.
Electrode assemblie 500 can have the structure with the structural similarity of the electrode assemblie 100 shown in Fig. 1 to Fig. 7 B.But as shown in Figs. 8 to 11, the first electrode tabs 540 can extend along identical direction (that is, upwards) with the second electrode tabs 550, and can extrude the sidepiece of electrode assemblie 500 after rolled electrode assembly 500.
Prevent film 160 similar to the short circuit shown in Fig. 1 to Fig. 7 B, on at least one edge that short circuit prevents film 560 can be arranged in the first edge 522a, the second edge 522b, the 3rd edge 522c and the 4th edge 522d, the short circuit of (when specifically, the second coated portion 524 expands) when expanding to prevent the second electrode 520.
Insulation shell 570 can be arranged on the top side of electrode assemblie 500.
Insulation shell 570 can be arranged on the insulator between electrode assemblie 500 and cap assemblies 700.Insulation shell 570 can comprise through hole 572, and the first electrode tabs 540 and the second electrode tabs 550 can be inserted in through hole 572 respectively.
Housing 600 can have the shape of the prism tank comprising open side, and can form holding portion with hold electrodes assembly 500 in housing 600.
Electrode assemblie 500 can be placed in the holding portion of housing 600, and then insulation shell 570 can be placed in housing 600 and to be positioned at the top side of electrode assemblie 500.
After being placed in housing 600 by electrode assemblie 500 and insulation shell 570, cap assemblies 700 can be attached to the open side of housing 600 to seal this open side.
Cap assemblies 700 can comprise terminal board 710, insulation board 720, cover plate 730, insulating washer 740 and electrode terminal 750.
Terminal board 710 can be electrically connected to the first electrode tabs 540 extended from the first electrode 510 of electrode assemblie 500.Because terminal board 710 can be electrically connected to the first electrode 510, so terminal board 710 can be used as the first electrode terminal of the secondary cell 2000 of present example.
Terminal board 710 can comprise the first through hole 712, to be electrically coupled and to be mechanically coupled to electrode terminal 750.
Insulation board 720 can be arranged on the top side of terminal board 710, using as the insulator between terminal board 710 and cover plate 730.
Insulation board 720 can comprise the second through hole 722, wherein, through the second through hole 722 and the first through hole 712 electrode insertion terminal 750.
Cover plate 730 can be electrically connected to the second electrode tabs 550 of electrode assemblie 500, and the flat shape of cover plate 730 can be substantially identical with the flat shape of the open side of housing 600, thus by cap assemblies 700 seal casinghousing 600.That is, in the present example, cover plate 730 can be used as the containment member of the housing 600 of sealed secondary battery 2000, and can be electrically connected to the second electrode 520, so cover plate 730 also can be used as the second electrode terminal of secondary cell 2000 due to cover plate 730.
Cover plate 730 can comprise the 3rd through hole 732 and for injecting electrolytical electrolyte injection hole 734, wherein, through the 3rd through hole 732 electrode insertion terminal 750.
Can utilize and inject the airtight electrolyte injection hole 734 of port lid 736.
The first through hole 712 that electrode terminal 750 can pass the 3rd through hole 732 of cover plate 730, the second through hole 722 of insulation board 720 and terminal board 710 is electrically connected to terminal board 710, and electrode terminal 750 can be used as securing member insulation board 720 and terminal board 710 being attached to cover plate 730.Insulating washer 740 can be used as insulator and is arranged between electrode terminal 750 and cover plate 730.
Be disclosed here specific embodiment, although employ specific term, only use these terms with general with descriptive meaning, instead of for the object limited.Therefore, it will be understood by those skilled in the art that when not departing from the spirit and scope of the present invention set forth in claim, the various changes in form and details can be carried out.
Accompanying drawing explanation
Fig. 1 is the perspective view of the secondary cell illustrated according to embodiment.
Fig. 2 is the decomposition diagram of the secondary cell illustrated according to embodiment.
Fig. 3 is the decomposition view of the electrode assemblie of the secondary cell illustrated according to embodiment.
Fig. 4 is the diagram of the state of electrode assemblie before electrode assemblie is wound illustrated according to the secondary cell of embodiment.
Fig. 5 is the zoomed-in view of the part A of Fig. 3.
Fig. 6 A and Fig. 6 B is the cutaway view intercepted along the line B-B ' of Fig. 3.
Fig. 7 A and Fig. 7 B is the diagram of the second electrode of the electrode assemblie of the secondary cell illustrated according to embodiment.
Fig. 8 is the perspective view of the secondary cell illustrated according to another embodiment.
Fig. 9 is the decomposition diagram of the secondary cell illustrated according to embodiment.
Figure 10 is the decomposition view of the electrode assemblie of the secondary cell illustrated according to embodiment.
Figure 11 is the diagram of the state of electrode assemblie before electrode assemblie is wound illustrated according to the secondary cell of embodiment.
Claims (18)
1. an electrode assemblie, described electrode assemblie comprises:
First electrode, has the first width, and wherein, the first electrode comprises the first coated portion;
Second electrode, has the second width, and wherein, the second electrode comprises the second coated portion, and wherein, at least one coated portion in the first coated portion and the second coated portion comprises silicon or silicon-containing compound;
Separator, is arranged between the first electrode and the second electrode;
Film, is arranged at least one edge of an electrode in the first electrode and the second electrode, and wherein, a described electrode has the wider width between the first width and the second width, and a described electrode has silicon or silicon-containing compound,
Wherein, described film comprises the flexible material that can expand together with the coated portion on a described electrode when electrode assemblie charges.
2. electrode assemblie as claimed in claim 1, wherein, the short circuit that film is constructed to prevent other component contact due to a described electrode and electrode assemblie from causing.
3. electrode assemblie as claimed in claim 1, wherein, film comprises insulating material.
4. electrode assemblie as claimed in claim 1, wherein, film comprises adhesive layer and basic unit, at least one electrode described in basic unit is adhered in described first electrode and described second electrode by adhesive layer.
5. electrode assemblie as claimed in claim 1, wherein, film covers a part for the coated portion of a described electrode.
6. electrode assemblie as claimed in claim 5, wherein, film comprises opening to expose the surf zone of coated portion in the part of the covering coated portion of film.
7. electrode assemblie as claimed in claim 1, wherein, film comprises the width of the stand out being less than the first electrode and the second electrode.
8. electrode assemblie as claimed in claim 1, wherein, film comprises the width of the half of the stand out being less than or equal to the first electrode and the second electrode.
9. electrode assemblie as claimed in claim 1, wherein, film is arranged on the first surface of a described electrode.
10. electrode assemblie as claimed in claim 9, wherein, film be also arranged on a described electrode with first surface back to second surface on.
11. electrode assemblies as claimed in claim 10, wherein, film to be arranged on continuously between the first surface of electrode and second surface and to be positioned on the top surface of electrode.
12. electrode assemblies as claimed in claim 1, wherein, film is arranged on the top edge of a described electrode.
13. electrode assemblies as claimed in claim 12, wherein, film is also arranged on the lower limb of a described electrode.
14. electrode assemblies as claimed in claim 13, wherein, film is also arranged on the connection top edge of a described electrode and at least one edge of lower limb.
15. electrode assemblies as claimed in claim 14, wherein, film is arranged on each edge of a described electrode.
16. electrode assemblies as claimed in claim 1, wherein, film is arranged on an edge of a described electrode, and electrode tabs extends from the parallel edge of another electrode the first electrode and the second electrode.
17. 1 kinds of secondary cells, described secondary cell comprises the electrode assemblie of claim 1.
18. 1 kinds of electrode assemblies, described electrode assemblie comprises:
First electrode, has the first width, and wherein, the first electrode comprises the first coated portion;
Second electrode, has the second width, and wherein, the second electrode comprises the second coated portion, and wherein, at least one coated portion in the first coated portion and the second coated portion comprises silicon or silicon-containing compound;
Separator, is arranged between the first electrode and the second electrode;
Insulator, is arranged at least one edge of an electrode in the first electrode and the second electrode, and wherein, a described electrode has the wider width between the first width and the second width, and a described electrode has silicon or silicon-containing compound,
Wherein, described insulator comprises the flexible material that can expand together with the coated portion on a described electrode when electrode assemblie charges.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US29554310P | 2010-01-15 | 2010-01-15 | |
| US61/295,543 | 2010-01-15 | ||
| US12/952,086 | 2010-11-22 | ||
| US12/952,086 US8765299B2 (en) | 2010-01-15 | 2010-11-22 | Electrode assembly and secondary battery including the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102130320A CN102130320A (en) | 2011-07-20 |
| CN102130320B true CN102130320B (en) | 2015-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110025053.5A Expired - Fee Related CN102130320B (en) | 2010-01-15 | 2011-01-17 | Electrode assembly and secondary battery including the same |
Country Status (1)
| Country | Link |
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| CN (1) | CN102130320B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017149977A1 (en) * | 2016-02-29 | 2017-09-08 | パナソニックＩｐマネジメント株式会社 | Non-aqueous electrolyte secondary battery |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1503994A (en) * | 2002-01-30 | 2004-06-09 | 松下电器产业株式会社 | Lead accumulator |
| CN1523701A (en) * | 2002-11-19 | 2004-08-25 | 索尼公司 | Battery |
| CN1694299A (en) * | 2002-05-30 | 2005-11-09 | 松下电器产业株式会社 | Lithium ion secondary battery |
| CN1720635A (en) * | 2003-04-22 | 2006-01-11 | 松下电器产业株式会社 | Alkali storage battery and method of producing the same |
| CN101188284A (en) * | 2007-10-15 | 2008-05-28 | 春兰(集团)公司 | A method for improving the short circuit and micro short circuit resistance of battery |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7951479B2 (en) * | 2005-05-11 | 2011-05-31 | Cardiac Pacemakers, Inc. | Method and apparatus for porous insulative film for insulating energy source layers |
-
2011
- 2011-01-17 CN CN201110025053.5A patent/CN102130320B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1503994A (en) * | 2002-01-30 | 2004-06-09 | 松下电器产业株式会社 | Lead accumulator |
| CN1694299A (en) * | 2002-05-30 | 2005-11-09 | 松下电器产业株式会社 | Lithium ion secondary battery |
| CN1523701A (en) * | 2002-11-19 | 2004-08-25 | 索尼公司 | Battery |
| CN1720635A (en) * | 2003-04-22 | 2006-01-11 | 松下电器产业株式会社 | Alkali storage battery and method of producing the same |
| CN101188284A (en) * | 2007-10-15 | 2008-05-28 | 春兰(集团)公司 | A method for improving the short circuit and micro short circuit resistance of battery |
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| Publication number | Publication date |
|---|---|
| CN102130320A (en) | 2011-07-20 |
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